Paper creasing and cutting apparatus



Sept. 6, 1932. J. J. REDMOND PAPER CREASING AND CUTTING APPARATUS Filed Oct. 5, 1951 :jnvennor Jljjgeamcma 9g di Patented Sept. 6, 1932 UNITED STATES JOHN J. BEDMOND,.OF TORONTO, ONTARIO, CANADA PAPER CREASING AND CUTTING- APPARATOS Application filed October 5, 1931. Seria1.No. 566,96 6.

This invention relates to apparatus for creasing and cutting off lengths of paper from a supply roll for use on cylindrical platens of printing presses. These platens are each provided with a radially directed surface on which one end of the length of paper is secured, the remainder of the paper eing curved round the cylindrical surface of the platen. This necessitates the paper being creased to snugly fit the corner between the radial and curved surfaces of the platen and the object of this invention is to provide simple apparatus for producing the desired sheet of paper ready for application to the platen without waste of time or material and without mussing or damaging the latter.

I attain my object by providing a frame having bearings formed therein for supporting a roll of paper. The lead end of this paper is fed by feed rollers over a bar which is provided with a straight-edge. A creaser comprising a roller having a V shaped groove adapted to co-operate with the straight-edge to form a transverse crease in the paper is carried on a slide which is mounted on a guide carried by the bar. A second slide carrying a knife is also mounted on the guide for cutting the paper into measured lengths.

The constructions are hereinafter more fully described and are illustrated in the accompanying drawing in which Fig. l is a front elevation of my apparatus;

Fig. 2 a plan view thereof;

Fig. 3 an end view thereof; and

Fig. 4; a cross sectional detail.

In the drawing like numerals of reference indicate corresponding parts in the different figures.

1 is a frame comprising two side members 1 in whch are formed bearings 2 for supporting a roll of paper 3; The lead end of the paper 3 is passed between a set of feed rollers 4: and 5 which feed the paper over a bar 6 extending across the front of the frame and se cured to the forward edges of the side members 1. On the bar is carried a guide 7 on which is mounted a creaser comprising a slide 8 mounted on the guide and a roller 9 journalled on the slide. The roller is provided with a V shaped groove adapted to co-operate with a straight-edge 10 formed on the bar 6 to form a transverse crease in the paper;

Any suitable well known measuring instru-v ment such as a yardstick'll'may be used to measure the paper 7 and, when the desired length has been fed by the feed rollers 4 and 5 past a stationary shear blade 12,"a,knif e 13 is adapted tocut this length from the web wound on the supply roll. A rotary knifeis employed which is journalle'd' on asecond slide 14 mounted on theguide 7 and is adapted to co-operate with the stationary shear blade 12 which is located behind the bar 6. 1

In practice the rollers i and, 5 are turned by a crank 15 to feed afew inches of paper past the straight-edge 10, the operator then manually bends the paper over the straightedge and then runs the grooved roller-over the partial crease in the paper which, results in a straight and permanent crease being formed therein, The feed rollersare again turned and, when the desired length of paper has beenunwound from thesupply roll; the knife is then operated to cutoff thisle'ngth; By returning the slides 8 and 14 to their nor mal positions at opposite: ends of the guide 7, either slide may be operatedindependentlyof the other. I p j What I claim as my invention is t 1. Paper cutting apparatus comprising a frame having bearings for supporting a roll o of paper; a bar supported on thefframe parallel to the axisof the bearings, the bar be ing provided with astraightedge onfwhich thepaper'may'be'creased; a guide supported in spaced relationship to the bar; and means carried by the guide for co-operation with the straight-edge to crease the paper.

2. Paper cutting apparatus comprising a frame having bearings for supporting a roll of paper; a bar supported on the frame parallel to the axis of the bearings, the bar being provided with a straight-edge on which the paper may be creased; a guide supported in spaced relationship to the bar; a slide mounted on the guide; a creasing element carried by the slide and co-operating with said straightedge; a knife carried by the slide; and a shear blade, complementary to the knife, located behind the said straight-edge.

3. Paper cutting apparatus comprising a frame having bearings for supporting aroll of paper; a bar supported on the frame parallel to the axis of the bearings, the bar being provided with a straight-edge on which the 1 ing a slide mounted on the guide; and aroller;

having a V shaped groove adapted to cooperate w1th the straight-edge to crease the paper may be creased; a guide supported in spaced relationship to the bar; a knife slidably mounted on the guide a creaser comprispaper thereon.

4. Paper cutting apparatus comp i i g .5 frame having bearings for supporting a ll p I of paper; a bar supported on the frame parallel to the axis of the bearings, the bar being provided with a straight-edge means for f feeding the lead end of the roll of paper across. the straight-edge;a guide carried by the bar in spaced relationship thereto a knife slidably mounted on the guide; and a creaser comprising a slide mounted on the guide and a'roller having a V shaped groove adapted to co-operate with the straight-edge to creasethe f paper thereon.

5. Paper cutting apparatus comprising a frame having bearings for supporting a roll of paper; a bar supported on the frame parallel t0 the axis of the bearings,the bar being provided with a straight-edge; means for feeding the lead end of the roll of paper across the straight-edge; a guide carried by the bar in spaced relationship thereto; a knife slidably mounted on the guide; a shear blade complementary to the knife; and a creaser comprising a slide mounted on the guide, and a roller having a V shaped groove adapted to co-operate with the straight-edge to crease the paper thereon. v

6. Paper cutting apparatus comprising a frame for supporting a roll of paper; a

straight-edge carried by the frame parallel to the axis of the roll; a creaser-adapted to cooperate with the straight-edge to crease the paper thereon; a knife and a stationary shear lade complementary to the knife, located to one side of the straight-edge.- Signed at the city of Toronto, Canada, this Qnd'day of October, 1931.

JOHN J. REDMOND.

ssh 

